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US3371647A
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Assignee: IRWIN B SHOPBELL
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Filing: 1966-07-12
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Granted: 1968-03-05
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Expires: 1986-07-12
Abstract
No abstract record available.
Inventors
- 👤 Irwin B Shopbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/02; G01C15/06; A; A63; A63C; A63C19/00; A63C19/06; A63C19/062; E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/627; E01F9/629
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US930236A
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US1164909A
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US1631566A
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US1726817A
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US2121961A
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US2095609A
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US2313115A
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US3091997A
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US3099244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |